Comment # 14 on bug 966999 from Michael from Offenbach Germany

Hi all. I've also run into (detected for the first time) this bug today.
Leap 42.1, KDE Plasma, Network Manager. As said before, works fine with wicked. 

With much help from #suse today maybe we can help a little bit:

We found a temporary workaround:

sudo sysctl -w �net.ipv6.conf.<INTERFACE>.accept_ra_pinfo=1

will get the "global temporary dynamic" ipv6 address for the desired
<INTERFACE>. After a while, be patient. And only until next reboot, not
persistent.

And we found a very detailed described bug in RedHat, same issue:
https://bugzilla.redhat.com/show_bug.cgi?id=1279242

Maybe worth looking is the last entry from Peter Bieringer:

"I've played around with a scriptlet and it turned out, that something
near/inbetween DHCPv6 will reset accept_ra_pinfo even if tempaddr is enabled"